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Environmental fate & pathways

Biodegradation in water: screening tests

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Description of key information

Readily biodegradable: 94.4% in 28 days (OECD 301E, read across)

Key value for chemical safety assessment

Biodegradation in water:
readily biodegradable

Additional information

One study investigating the ready biodegradability of Sodium hydrogen N-(1-oxododecyl)-L-glutamate (CAS No. 29923-31-7) is available showing that the substance is ready biodegradable according to OECD Guideline 301 D. In addition available data for the source substance l-Glutamic acid, N-coco acyl derivs., monosodium salts (CAS No. 68187-32-6) was used in a read-across approach. The read across is considered valid asthe target substance is the major component, and the central member of an homologous series of components, of the source substances, possessing identical functional groups and extremely similar structures.  It is reasonable to expect that the toxicological properties of the target and source substances will not be markedly different.  On this basis, experimental data on the source substances are expected to be directly applicable to the target substance, and can be used to adequately predict its properties. Further details are provided in the in the field “Attached documents” The read-across key study was performed according to OECD guideline 301E using polyvalent microorganisms as inoculum (Hoechst, 1989). Test substance concentrations of 4 – 50 mg DOC/L were tested. The test substance showed a biodegradation of 81.4% after 7 days and 94.4% after an incubation period of 28 days. Thus, the test substance is readily biodegradable according to OECD criteria. Due to the rational provided above for the read-across approach, this result can also be considered for Sodium hydrogen N-(1-oxododecyl)-L-glutamate (CAS No. 29923-31-7)